1. Ekusebenzeni kokuqala kwezinto zokwakha eziluhlaza, ngokusika, ukuchoboza, ukuhlolwa kanye nezinye izindlela, ukwenza isisindo se-cast cast, iphakheji engaphansi;

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3. I-Slag Ebonakalayo ngokulengiswa kwekheji noma indlela yokulahla ejikelezayo, ukuqoqa okusele;

4. Ngemuva kokukhishwa kwesihlungi sokuqala, ngokusebenzisa ukuphefumula okupholile, ukwelashwa okuphindaphindwayo kwe-centrifugal, thola uketshezi lokukhipha;

I-5. Khipha ngokuhlushwa okushisa okuphansi, ukuhlukaniswa koketshezi, ukuhlukaniswa kwe-solvent ketshezi, ubuningi obuphezulu, ukugxilwa okukhulu kokugxila;

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7. I-Intermediate ngokugcwalisa, inzalo, ukufinyelela imikhiqizo ewuketshezi; noma ngokomiswa, ukugaya, njll.

8. Imishini ebalulekile yokusebenzisa ubuchwepheshe obuthuthukisiwe, ukushesha, ukuvumelana nezimo okuqinile, imikhiqizo esezingeni eliphakeme;

9. Uhlelo lonke lwenqubo luvaliwe, umusi, amanzi ashisayo, i-organic solvent ukuphinda usebenzise kabusha, ukonga amandla, ukusebenza kahle kwezemvelo, okuluhlaza okotshani, ukuvikelwa kwemvelo okuhambisana nentuthuko yamazwe omhlaba;